/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.service.reliable.events;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import cgl.narada.event.NBEvent;
/** This event encapsulates the retransmission initiated on the basis of a 
    prior NAK request corresponding to a specific sequence number. Among 
    other things information included in this event include
    a) The sequence number of the stored event
    b) The original event
    c) The sequencing information (for this template id) pertaining to the
    event archived prior to this event.

    @author Shrideep Pallickara
    $Date$
    $Revision$
*/

public class RdRetransmissionServiceEvent {

  private long retransmissionId;
  private NBEvent nbEvent;
  private RdArchivalServiceNotification archivalNotification;
  
  private String moduleName = "RdRetransmissionServiceEvent: ";
  
  public 
  RdRetransmissionServiceEvent(long retransmissionId,
			       NBEvent nbEvent, 
			       RdArchivalServiceNotification archNotify) {
    this.retransmissionId = retransmissionId;
    this.nbEvent = nbEvent;
    this.archivalNotification = archNotify;
  }
  
  public long getRetransmissionId() {
    return retransmissionId;
  }

  public NBEvent getEvent() {
    return nbEvent;
  }
  
  public RdArchivalServiceNotification getArchivalNotification() {
    return archivalNotification;
  }

  public RdRetransmissionServiceEvent(byte[] marshalledBytes) {
    ByteArrayInputStream baInputStream = 
      new ByteArrayInputStream(marshalledBytes);
    DataInputStream din = new DataInputStream(baInputStream);

    try {
      din.readByte(); /**ReliableDeliveryExchange.RETRANSMITTED_RDS_EVENT*/
      
      retransmissionId = din.readLong();
      
      byte[] nbEventBytes = new byte[din.readInt()];
      din.readFully(nbEventBytes);
      nbEvent = 
	cgl.narada.event.impl.NBEventGenerator.unmarshallEvent(nbEventBytes);
      
      byte[] notificationBytes = new byte[din.readInt()];
      din.readFully(notificationBytes);
      archivalNotification = 
	new RdArchivalServiceNotification(notificationBytes);
      

    } catch (IOException ioe) {
      System.out.println(moduleName + "Error while un-marshalling");
    }/** end try-catch block*/

  }


  public byte[] getBytes() {
    ByteArrayOutputStream baOutputStream = new ByteArrayOutputStream();
    DataOutputStream dout = new DataOutputStream(baOutputStream);
    byte[] marshalledBytes= null;
    try {
      dout.writeByte(ReliableDeliveryExchange.RETRANSMITTED_RDS_EVENT);
      
      dout.writeLong(retransmissionId);
      
      byte[] nbEventBytes = nbEvent.getBytes();
      dout.writeInt(nbEventBytes.length);
      dout.write(nbEventBytes);

      byte[] notificationBytes = archivalNotification.getBytes();
      dout.writeInt(notificationBytes.length);
      dout.write(notificationBytes);

      dout.flush();
      marshalledBytes = baOutputStream.toByteArray();
    } catch (IOException ioe) {
      System.out.println(moduleName + "Error while marshalling");
    } /** end try-catch block*/
    
    return marshalledBytes;
  }
}
